Skip to main content Skip to search Skip to main navigation
Menu

Discount scale

Buy more, save smart!

3%

from shopping cart value of 300 €

5%

from shopping cart value of 600 €

8%

from shopping cart value of 1,000 €

10%

from shopping cart value of 1,500 €

15%

from shopping cart value of 2,000 €

Description

Boring Bar MTFNR/L 91°, Indexable Insert Holder

The Boring Bar MTFNR/L 91° is designed for negative 60° triangular inserts of the TN family (TNMG, TNMM, TNMA) with 91° approach angle. The triangular geometry provides six usable cutting edges per insert – a cost-effective solution for standard internal turning tasks.

The M-clamping with top clamp and centring hole secures the insert seat without micro-movement even under varying cutting loads. The slim holder allows access to deep internal bores without the tool clamping bumping into the chuck or tailstock. Tempered CrMo steel with black oxide finish secures the boring bar against cutting force deformation and protects the surface from corrosion. With R and L versions, the boring bar is equally available for right- and left-hand cutting turning operations.

The MTFNR/L 91° is particularly suitable for internal bores with right-angled shoulder guidance and is cost-effective with TNMG loading thanks to six usable cutting edges.

Scope of delivery: 1 MTFNR/L boring bar (without indexable insert) including shim, pin, clamp, screw, and wrench.

Note: The image shows the right-hand version (R).

MTFNR boring bar / internal turning tool / turning tool holder – detail view – product image
Properties
Application: For Internal Turning
Approach Angle: 91°
Clamping System: M
Internal Cooling: Without Internal Cooling
Material: Steel
Suitable for Inserts: TN..1604..
Type: MTFNR/L
Manufacturer information

Pflichtangaben gemäß GPSR Produktsicherheitsverordnung:

TILL TOOLS GmbH
Am Kebigsgraben 19
97616 Salz
Deutschland
E-Mail: info@tilltools.de

Reviews 12

12 of 12 reviews

Average rating of 4.75 out of 5 stars


75%

25%

0%

0%

0%


Leave a review!

Share your experiences with other customers.


1 - 10 of 12 reviews

17 December 2025 09:42

Review with rating of 4 out of 5 stars

Bohrstange 91 Grad für TF-Platten erster Einsatz

Die Bohrstange läuft bislang ordentlich bei meinen Innenschulter-Arbeiten in 42CrMo4, die Wiederholgenauigkeit passt. Für die Dauerbewertung brauche ich mehr Einsätze.

24 November 2025 15:09

Review with rating of 4 out of 5 stars

Halter wirkt solide bisher

Bohrstange läuft bisher ordentlich bei Innendrehen in Stahl. Klemmung macht einen soliden Eindruck. Für die Dauerhaltbarkeit fehlt mir noch die Erfahrung.

30 July 2025 10:04

Review with rating of 5 out of 5 stars

Innenhalter 91 Grad gut

Der 91°-Halter eignet sich für die Innenkonturen in Mittelstückzahlen, Klemmung und Plattensitz sauber.

8 June 2025 05:22

Review with rating of 5 out of 5 stars

Solide Bohrstange

Innenbearbeitung von Formaufnahmen läuft ruhig. Preis-Leistung in Ordnung.

18 April 2025 08:36

Review with rating of 5 out of 5 stars

Brauchbare Bohrstange für den Alltag

Die Bohrstange mit 91° Anstellung klemmt die Platte sauber, auch bei längeren Innenbearbeitungen keine nennenswerten Schwingungen. Für meinen Einsatz in der Einzelteilfertigung absolut in Ordnung, die Verarbeitung wirkt wertig und der Preis passt auch.

8 April 2025 17:39

Review with rating of 5 out of 5 stars

Bohrstange 91 Grad günstig

Die Bohrstange hat einen fairen Preis, Innenkonturen in 16MnCr5 gelingen sauber. Kein Chattern im Werkstattalltag. Im Budget-Segment ist das Werkzeug in meiner Werkstatt eine zuverlässige Wahl, die Werkzeugausführung bleibt konstant, die Werkzeugaufnahme passt und die Werkzeugstandzeit liegt auf solidem Niveau.

1 February 2025 14:28

Review with rating of 5 out of 5 stars

Zuverlässig beim Innendrehen

Die 91-Grad-Anstellung passt für meine Schulterübergänge. Klemmt ordentich und das Werkzeug bleibt ruhig, auch bei etwas längeren Stangen.

30 July 2024 11:18

Review with rating of 5 out of 5 stars

Stahl läuft sauber durch

Für engere Bohrungen eine klare Empfehlung. Macht gute Oberflächen und das Werkzeug schwingt kaum bei normaler Ausladung.

11 June 2024 10:43

Review with rating of 5 out of 5 stars

Für Sacklöcher sehr gut geeignet

Bei Reparaturen mit Sacklochbearbeitung nutze ich die Stange regelmäßig. Stahl wirkt stabil, Platte wechselt fix. Bin zufrieden.

4 February 2024 01:35

Review with rating of 5 out of 5 stars

91° Bohrstange macht gute Arbeit

Die 91°-Bohrstange setze ich für Innendurchmesser zum Planschlichten ein. Läuft ruhig, auch bei mittlerer Auskraglänge kein Rattern. Das Schnittbild gefällt mir, und die Klemmung ist gut bedienbar. Für den Preis ein klar solides Werkzeug.

Skip product gallery

Matching Cutting Inserts

TNMG160402/04/08/12 indexable inserts for aluminium

Average rating of 5 out of 5 stars

Prod. no.: TT10343
TNGG Indexable Carbide Inserts for Aluminium
Optimal machining of aluminium and more: TNGG indexable carbide inserts with N1 chip breaker, reduces cutting forces and maximises tool life.

Content: 10 Piece (€4.99 / 1 Piece)

Regular price: From €56.90
TNMG160404, TNMG160408, TNMG160412 indexable insert for stainless steel and steel

Average rating of 5 out of 5 stars

Prod. no.: TT10620M
TNMG Indexable Carbide Inserts for Stainless Steel and Steel
Reduce your unit costs: the PVD-coated TNMG indexable insert offers 6 usable edges for economical medium machining of steel and stainless steel.

Content: 10 Piece (€1.69 / 1 Piece)

Regular price: €59.90
TNMG160404/08/12, TNMG220404/08 indexable inserts for steel

Average rating of 5 out of 5 stars

Prod. no.: TT10329M
TNMG Indexable Carbide Inserts for Steel
TNMG indexable inserts for steel: negative 60° triangular insert with 6 cutting edges for longitudinal, facing, contour turning. CVD-coated, ISO P10–P30.

Content: 10 Piece (€4.99 / 1 Piece)

Regular price: From €59.90
TNMG indexable inserts with CVD coating for medium turning of steel in ISO range P15–P30

Average rating of 5 out of 5 stars

Prod. no.: TT10718M
TNMG Indexable Carbide Inserts for Steel
TNMG indexable inserts for steel: negative 60° triangular insert with 6 cutting edges. CVD coated with C1020, ISO standard for steel.

Content: 10 Piece (€1.79 / 1 Piece)

Regular price: €59.90
TNMG indexable insert for finish turning of steel

Average rating of 5 out of 5 stars

Prod. no.: TT10802
TNMG-GF Indexable Carbide Inserts for Steel
TNMG indexable carbide insert: precise finishing of steel with long tool life and perfect surface quality.

Content: 10 Piece (€5.29 / 1 Piece)

Regular price: €59.90
TNMG indexable insert for medium machining of steel, general steel machining

Average rating of 4.9 out of 5 stars

Prod. no.: TT10796
TNMG-GM Indexable Carbide Inserts for Steel
TNMG indexable carbide insert – efficient steel machining with highest wear resistance.

Content: 10 Piece (€5.89 / 1 Piece)

Regular price: €59.90
New Grade!
TNMG-M1 turning insert with high hardness and toughness for stainless steel – product image

Average rating of 5 out of 5 stars

Prod. no.: TT10938
TNMG-M1 Indexable Carbide Inserts for Stainless Steel
TNMG-M1 indexable insert: AlTiSi coating, robust geometry, reliable chip evacuation and long tool life for stainless steel.

Content: 10 Piece (€5.99 / 1 Piece)

Regular price: €59.90
New Grade!
TNMG-M3 turning insert for medium stainless steel machining – product image

Average rating of 5 out of 5 stars

Prod. no.: TT10948
TNMG-M3 Indexable Carbide Inserts for Stainless Steel
Versatile medium machining: TNMG-M3 with M3 chipbreaker, high process reliability and robust cutting edge.

Content: 10 Piece (€5.99 / 1 Piece)

Regular price: €59.90
New Grade!
CVD-coated TNMG P1 indexable insert for steel machining – ideal for finishing during turning.

Average rating of 5 out of 5 stars

Prod. no.: TT10906
TNMG-P1 Indexable Carbide Inserts for Steel
TNMG P1 indexable insert – double benefit per insert. Long tool life, reliable chip evacuation and excellent surface finish for steel and cast iron.

Content: 10 Piece (€5.99 / 1 Piece)

Regular price: From €59.90
New Grade!
CVD-coated TNMG P3 indexable insert for steel machining – ideal for medium machining during turning.

Average rating of 4.9 out of 5 stars

Prod. no.: TT10919
TNMG-P3 Indexable Carbide Inserts for Steel
TNMG P3 indexable insert – double-sided. High economy, long tool life and stable performance for medium machining.

Content: 10 Piece (€5.99 / 1 Piece)

Regular price: From €59.90
New Grade!
CVD-coated TNMG P6 indexable insert for steel machining – ideal for roughing during turning.

Average rating of 5 out of 5 stars

Prod. no.: TT10927
TNMG-P6 Indexable Carbide Inserts for Steel
High-performance TNMG P6: For deep cuts, high feed rates and maximum metal removal rate. Wear-resistant and economical.

Content: 10 Piece (€5.99 / 1 Piece)

Regular price: From €59.90
precision TNMG indexable inserts for ISO P15 to P30 with negative geometry

Average rating of 4.64 out of 5 stars

Prod. no.: TT10953
TNMG-VF Indexable Carbide Inserts for Steel
TNMG-VF indexable inserts for steel: negative 60° triangular insert with VF finishing geometry. CVD with TT6225, P15–P30.

Content: 10 Piece (€6.09 / 1 Piece)

Regular price: €59.90